US Space Force's 'Orbital Prime' project aims to attack space debris by recycling or removing junk

NASA's James Webb Space Telescope is cooling down for its next trick: Observing the universe

SpaceX’s Starlink Satellites Are Photobombing Astronomy Images, Study Says | Streaks left by passing satellites mar observatories’ celestial images, potentially hinder spotting of dangerous asteroids

What's the oldest mountain range in the world? (How about the youngest?)